How To Implement Universal Analytics In Cs Cart 3.0.2

HI, I've got many customer changes in my CS CART 3.0.2 so I can't so easily upgrade to higher version. Can somebody help me to implement Universal analytics including Ecomerce and transaction details into my ecomerce website? Pls, provide exact code and where to place it. Thanks a million, I've tried so many times but didn't find yet working solution.